Up until the 15th century, you could apparently walk from India to Sri Lanka. Rama’s Bridge is a short chain of limestone islands and shoals with a very fraught religious and political history.
In World War II, it was standard practice to add nonsense phrases to coded messages in transit, in order to thwart decryption efforts. One of those phrases accidentally changed the course of the largest naval battle in history.
Where do old spacecraft go to die? Into a graveyard orbit, or into the middle of the Pacific Ocean.
Continents move – we know this. The Atlantic is growing thanks to the expansion of the Mid-Atlantic Ridge. But in the future the ridge may start subducting. And with it, the Atlantic may become an inland sea.
I write about blood a lot. Sorry. But there’s a waterfall in Antarctica that is the colour of blood. And it has some interesting implications for astrobiology and extinction event survival.
Sailing around the end of South America, you steer around what you think is Cape Horn. But instead of open ocean there’s a surprise island dead ahead. You’re about to be shipwrecked thanks to the False Cape Horn.
Around 1311 CE, the mansa (sultan) of the Mali Empire sent hundreds of ships to find the other side of the Atlantic Ocean. They were lost at sea, so on the next expedition he sailed into the Atlantic himself. He was never seen again.